3821989

Information

• Patent Grant
• 3821989

• References
• Source

• Patent Number

  3,821,989

• Date Filed

  Not available

• Date Issued

  Tuesday, July 2, 1974
  51 years ago

• CPC

  • A01B33/146 - the rotating shaft being oriented vertically or steeply inclined
  • A01B33/065 - comprising a plurality of rotors carried by an elongate, substantially closed transmission casing, transversely connectable to a tractor
  • A01B33/12 - Arrangement of the tools Screening of the tools

• US Classifications

  • 172 - Earth working